Oat-hulling machine



J. K. ROSKAMP OAT HULLING MACHINE Filed Sept. 18l 1925 Dec. 21 1926.

John Jjoskamyo rAT'ENTyo 1,611,280* FFlcE.;

i JOHN K. ROSK'AMP, 0F GRUNDY CENTER, IOWA.

OAT-HULLING MACHINE. i

Application mea september" 1s, i925. sei-faim. 57,'1a4.

My device relates to improvements in grain hulling machines, and .theobJect; of my improvements is to provide a mechanlsm .forihulling oatsorother rain having adherent husks or hulls, and or separating the l isconnected diagonally between the outer detached hulls from the hulledgrain andl then diverting' the hulls and Ithe grain to differentoutlets-forseparated de osit.

This object has been accomplis ed b the 10 means which are hereinafterdescribe and f claimed, it being understood that -various modificationsmay be effected in the elements of my machine without departing from theprinciples of said inventlon.

tral section of my improved grain hulling machine. Fig. 2- is a.transverse section vof `the convoluted tubular hulling' means taken onthe broken line 2-P2'of said Fig. 1. Fig.

3 is an elevation of one face of sald hullling means taken von thebroken line 3,-3 of Fig 1 and showing the. connected beater elevmentsand the fan. Fig. 4 is a side eleva tion of the parts shown in Fig. 3. l

Oats and some other grain have closely adherent hulls or huslgs, whichare difficult to remove cleanly in a ushort time, and it is my object toeffect this by my machine.

A hollow housing 1 is rigidly mounted on connected divergent legs whichconstitute a supportingframe 2. The housing has at its forward end anaperture 4 through which may be passed the dlminished lower part ofspout of a hopper 5 for the unhulled grain.

a5 A rotatable shaft6 isl also passed into said aperture 4 and is'mounted in bearing-boxes i 7 on a bracket O, both the bracket andhopper beingl mounted on the housing but may be-otherwise supported'. Apulley 8 is fixed I 4o on the outer extremity of the shaft 6 to Y' carrya driving-belt 9.

Fig. 1 is a vertical longitudinal .and cen' 'Dhe'housing 12 diminishedcylindrically -at 3 and has a frustal delivery end 22. The

part 3 has a longitudinal aperture 25`alongY its downwardly Nbulgedbottom.

Within the forward end of the housing 1 a Acentrifugal hulling device 15is fixed on the shaft 6, and has a forwardly opening vcylindricalelement 17 open in front and closed inthe rear and into apertures -.ofwhich the -spout of thelhopper v5 delivers into -a plurality ofradiallyarranged tubes f openingat Oife endinto the cylinder 17 said tubeshaving their outer ends opening close to the inner wall of the housing.'Each tube is bent at' two opposite sides to provide con volutions inits inner passage 12 produced by the inner and staggered angles 13,salient and reentrant, along their lengths. A bar 14 ends of eachabutting Kair of tubes 15, extending from one face orward of one to theother face back of the other. A flat ring 1S' is fixed upon the'reart'faces of the tubes 15 concentric with the shaft 6 and carries uponits circumferential periphery a plurality of spaced radialprojections orbeaters 19. A fan Wheel 20 is also fixed upon the. shaft 6 within saidri'ig 1 8. Another ring element 11 is mounted u on the inner wall ofthe70. housing 1 partial y. about the hulling device and partiallyprojecting rearwardly therefrom as far as thertseparating chamber 3 ofthe housing. This ring element is corrugated obliquely to supply widegrooves or troughs delivering into the chamber part 3. The ring 11 isshaped with annular narrowing part 26 which projects inwardly nearly tothe outer edges of the beaters 19.

A funnel 23 is fixed on a hanger Within the housing parts l and 3 toopen its receivits diminished rbend 24 to deliver justV abovethelslotted longitudinal aperture or delivery outlet 25 for the cleansedgrain located in a v downward bulge of the chamber bottom 3. To the rearof the funnel asloping plate or bafiier `device 27 is supported in thechamber 3 anterir to its chaff delivery part 22. The front wall of thehousing 1 has an air-inlet aperture 28. l

pemtz'on-.-Grain is delivered by the hopper 5 into the inner ends of therotating tubes 15, whence by 'cent-rifugalforce it is hurled outwardlyto pass the tubular convoluted bores with contacts against the angles 13thereof. This hulls away the husks of the oats from the grain, s0, thatthe mixture of both is delivered outwardly against the corrugated`ring11. The air draft aidsjifn drawing this mixture across the path ofrotation of the beaters 19 which fiail 'itand the hulls arefurthericrowded and stripped between the beaters. and the ring bulge26^to thus perfect the process of lhulling. The mixture of grain andsepathe upper'partof the chamber and pass back of the funnel 23 againstthe inclined baliling- K- Y deliyery end 22.

`.'wlii ':h may be with the flying hulls to drop down and slide to theoutlet 25, while the latter together with the hulling device rotate l0.Y minute, in moving downwardly through the plate 27, the latterarresting any of the gram hullspass around th'eplate and out at the TheVair dma made' by 'the fan, which at about eighteen 'hundred revolutionsper spout 24'of 'the funnel 3 blows still adherent articlesmf hulls omthe'grain below it,'t e .hulls arising to pass outat the Adelivery'opening while the now 'cleaned grain passesout othe'aperture 25 intoany receptacle placed without to receive it.

The device has been practically used and Jis elective in completelyhulling the grain,

separating and.' separately delivering the cleaned grain and the'chai.is rapidly effected, and' mayV be made a continuousloperation.

Havin described my invention, what I claim as new, and desire to secureby Letters -1. In a device of the character described, a housing havingan end wall aperture, a

n' rotatable shaft in Said housing, a chamber with one closed andoneopen end mountedl on said 4.shaft within the housing, means fordelivering unhulled grain into said/chamber, radial arms mounted uponthe circumferential periphery of said chamber, hollowand incommunication therewith, .the opposite longitudinal walls of the armsbeing zlgzag,

lengthwise through said' housin -to carry.

`sepa-rated 4hulls -and grainfthroug the elongated part thereof to saidportsrespectively as separated in said elongation.

2. In a device of the character described, 'a

` housing havin an end wall aperture, a rotatable shaft 1n said housing,hollow zigzag arms-mounted radiatingly upon said shait, means fordelivering 'unhulled grain into `the open ,inner ends of-said. arms, an

annular bandraround' and slightly spaced from said arms, said-band bemgobliquely crimped and extending beyond said arms .ward said delivery 3.-Ina device of thecharacter described, a .1 .housing having recelvingand delivery `open- 65 away `from said apertured end wallf, said housingbeingelongated beyond said`band and provided with an upperdelivery portfor .separated'hulls and a bottom port for sepa- 00 .rated grain, and\means for creating an air current through said .housing lengthwisetoports.

ings, and a rotatable huller mounted within the' housing having'aplurality of tubes spaced apart and which 'have staggered projectionson-'their inner oppositel slde walls the tubes-opening tolrecelvecentrally an *70 l`to deliverV circumferentially, propeller barsconnected diagonally between the outer ends .of the tubes, and means forCreatin an air draft .through the heus' between e tubes and across theirouter en and said propel- *7?- lcr bars. 4.' In a 'device of thecharacter described,

a housing havin openings, a rotata le hulling device in said housinghaving spaced zigzag open end 90 i tubes open at@ both ends,arrangedsubstan: tially radially Ito receive centrally of the de viceanddehver circumferentially, inclined propeller bars fixed rbetween theouter ends of the' tubes,'an'd beater elementsV mounted 95 uponthe4tubes within the path of movement of material ejected from the tubes as.pro-

elled in one direction by said propeller ars.

a housing having receiving and delivery openings, a-rotatable hullingdevice in said i housmg having convoluted. passages to receive unhulledgrain and deliver it'circumerentially to be hulled by contacts `of the95 gram therein withgthe -convolutions ofthe.

passages, fan vanesffixedon said devme and oblique. circumferentialbarslixed on the device to prolpel ejected grain and separated t e path ofrotation of the beater 100g hulls into elements, 'a .ring element`surrounding said hulling device and projeiztinv therebeyond f and'havinPan integral inwar ly projecting lannulus a utting the. outer edges ofthe beater elements; said ring element vbeing cor- 105 rugatedinclinedly transversely, andra fan rotatable t`o drive an air currentacross the hulling device'and said propeller, and beater4 elements. i

ture.

' 'JOHN"K. ROSKAMP..

receiving and delivery 5. In. a device of thecharacter described, 901

In testimony whereof I. ailixlmy signalm'

